ClassHelper (jprotobuf 2.4.15 API)

java.lang.Object
- com.baidu.bjf.remoting.protobuf.utils.ClassHelper

```
public class ClassHelper
extends Object
```
A utility class for class and class loader.

从以下版本开始:

1.0.0

作者:

xiemalin

字段概要

字段
限定符和类型	字段和说明
`static String`	`ARRAY_SUFFIX` Suffix for array class names: "[]"
`static String`	`PACKAGE_SEPARATOR` package separator string
`static char`	`PACKAGE_SEPARATOR_CHAR` package separator char

构造器概要

构造器
构造器和说明

ClassHelper()

构造器
构造器和说明
`ClassHelper()`

方法概要

所有方法静态方法具体方法
限定符和类型	方法和说明
`static Class<?>`	`forName(String name)` Same as `Class.forName()`, except that it works for primitive types.
`static Class<?>`	`forName(String name, ClassLoader classLoader)` Replacement for `Class.forName()` that also returns Class instances for primitives (like "int") and array class names (like "String[]").
`static Class<?>`	`forNameWithCallerClassLoader(String name, Class<?> caller)` to initialize clss by name from caller.
`static Class<?>`	`forNameWithThreadContextClassLoader(String name)` To fix name with thread context of class loader
`static ClassLoader`	`getCallerClassLoader(Class<?> caller)` get class loader from caller calss
`static ClassLoader`	`getClassLoader()` Return the default ClassLoader to use: typically the thread context ClassLoader, if available; the ClassLoader that loaded the ClassUtils class will be used as fallback.
`static ClassLoader`	`getClassLoader(Class<?> cls)` get class loader
`static String`	`getClassName(Class<?> cls)` get class simple name from `Class` instance.
`static String`	`getFullClassName(Class<?> cls)` get new class name with full package
`static String`	`getInternalName(String clsName)` get class internal name from Class.getName(). sub class like A$B to A.B
`static long`	`getLastModifyTime(Class<?> cls)`
`static String`	`getPackage(Class<?> cls)`
`static boolean`	`hasDefaultConstructor(Class<?> cls)` To test class if has default constructor method
`static Class<?>`	`resolvePrimitiveClassName(String name)` Resolve the given class name as primitive class, if appropriate, according to the JVM's naming rules for primitive classes.
`static String`	`toShortString(Object obj)` To get short message of object instance.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - PACKAGE_SEPARATOR_CHAR
```
public static final char PACKAGE_SEPARATOR_CHAR
```
    package separator char
    
    另请参阅:
    
    常量字段值
  - PACKAGE_SEPARATOR
```
public static final String PACKAGE_SEPARATOR
```
    package separator string
    
    另请参阅:
    
    常量字段值
  - ARRAY_SUFFIX
```
public static final String ARRAY_SUFFIX
```
    Suffix for array class names: "[]"
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - ClassHelper
```
public ClassHelper()
```
- 方法详细资料
  - getInternalName
```
public static String getInternalName(String clsName)
```
    get class internal name from Class.getName(). sub class like A$B to A.B
    
    参数:
    
    clsName - class name
    
    返回:
    
    internalname
  - getLastModifyTime
```
public static long getLastModifyTime(Class<?> cls)
```
  - forNameWithThreadContextClassLoader
```
public static Class<?> forNameWithThreadContextClassLoader(String name)
                                                    throws ClassNotFoundException
```
    To fix name with thread context of class loader
    
    参数:
    
    name - class name
    
    返回:
    
    loaded class
    
    抛出:
    
    ClassNotFoundException - if class not found
  - forNameWithCallerClassLoader
```
public static Class<?> forNameWithCallerClassLoader(String name,
                                                    Class<?> caller)
                                             throws ClassNotFoundException
```
    to initialize clss by name from caller.
    
    参数:
    
    name - class name
    
    caller - caller of Class type
    
    返回:
    
    loaded class
    
    抛出:
    
    ClassNotFoundException - if class not found
  - getCallerClassLoader
```
public static ClassLoader getCallerClassLoader(Class<?> caller)
```
    get class loader from caller calss
    
    参数:
    
    caller - caller of Class type
    
    返回:
    
    loaded class loader
  - getClassLoader
```
public static ClassLoader getClassLoader(Class<?> cls)
```
    get class loader
    
    参数:
    
    cls - target class to get ownered class loader
    
    返回:
    
    class loader
  - getClassLoader
```
public static ClassLoader getClassLoader()
```
    Return the default ClassLoader to use: typically the thread context ClassLoader, if available; the ClassLoader that loaded the ClassUtils class will be used as fallback.
    Call this method if you intend to use the thread context ClassLoader in a scenario where you absolutely need a non-null ClassLoader reference: for example, for class path resource loading (but not necessarily for Class.forName, which accepts a null ClassLoader reference as well).
    
    返回:
    
    the default ClassLoader (never null)
    
    另请参阅:
    
    Thread.getContextClassLoader()
  - forName
```
public static Class<?> forName(String name)
                        throws ClassNotFoundException
```
    Same as Class.forName(), except that it works for primitive types.
    
    抛出:
    
    ClassNotFoundException
  - forName
```
public static Class<?> forName(String name,
                               ClassLoader classLoader)
                        throws ClassNotFoundException,
                               LinkageError
```
    Replacement for Class.forName() that also returns Class instances for primitives (like "int") and array class names (like "String[]").
    
    参数:
    
    name - the name of the Class
    
    classLoader - the class loader to use (may be null, which indicates the default class loader)
    
    返回:
    
    Class instance for the supplied name
    
    抛出:
    
    ClassNotFoundException - if the class was not found
    
    LinkageError - if the class file could not be loaded
    
    另请参阅:
    
    Class.forName(String, boolean, ClassLoader)
  - resolvePrimitiveClassName
```
public static Class<?> resolvePrimitiveClassName(String name)
```
    Resolve the given class name as primitive class, if appropriate, according to the JVM's naming rules for primitive classes.
    Also supports the JVM's internal class names for primitive arrays. Does not support the "[]" suffix notation for primitive arrays; this is only supported by forName(java.lang.String).
    
    参数:
    
    name - the name of the potentially primitive class
    
    返回:
    
    the primitive class, or null if the name does not denote a primitive class or primitive array class
  - toShortString
```
public static String toShortString(Object obj)
```
    To get short message of object instance.
    
    参数:
    
    obj - target object
    
    返回:
    
    short message
  - getClassName
```
public static String getClassName(Class<?> cls)
```
    get class simple name from Class instance.
    Here we should take case member class is a little different from common class.
    
    参数:
    
    cls - target class
    
    返回:
    
    simple class name
  - getPackage
```
public static String getPackage(Class<?> cls)
```
  - hasDefaultConstructor
```
public static boolean hasDefaultConstructor(Class<?> cls)
```
    To test class if has default constructor method
    
    参数:
    
    cls - target class
    
    返回:
    
    true if has default constructor method
  - getFullClassName
```
public static String getFullClassName(Class<?> cls)
```
    get new class name with full package
    
    返回:
    
    class name

类 ClassHelper

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

PACKAGE_SEPARATOR_CHAR

PACKAGE_SEPARATOR

ARRAY_SUFFIX

构造器详细资料

ClassHelper

方法详细资料

getInternalName

getLastModifyTime

forNameWithThreadContextClassLoader

forNameWithCallerClassLoader

getCallerClassLoader

getClassLoader

getClassLoader

forName

forName

resolvePrimitiveClassName

toShortString

getClassName

getPackage

hasDefaultConstructor

getFullClassName